#include"mystdio.h"
#include"mymath.h"
#include<stdio.h>
int main()
{
    myFILE* fp = my_fopen("res.txt","w");
    int a = 10;
    int b = 20;
    int res = Add(a,b);
    char resStr[128];
    sprintf(resStr,"%d + %d = %d",a,b,res);
    
    my_fwrite(fp,resStr,128);
    my_fclose(fp);
}
